Synopsis

The upgraded ID27 beamline at the ESRF, now a 120-meter-long instrument, is fully optimized for the Extremely Bright Source (EBS), delivering enhanced X-ray beam focus, intensity, coherence, and stability. Key features include a cryo-undulator (CPMU18), double-multilayer and double-crystal monochromators, and Kirkpatrick-Baez (KB) focusing mirrors for nano- to micro-XRD, XRF, and XRI experiments. The end-station supports high-pressure, high- and low- temperature studies with sub-micron spatial resolution and advanced detectors.

Disciplines

• Chemistry
• Physics
• Earth and Planetary Sciences
• Materials and Engineering
• Environmental Sciences
• Life Sciences

Applications

• Earth and planetary sciences
• Fundamental physics
• Chemistry
• Materials research
• Biophysics/biochemistry
• Life and biological function under extreme conditions

Techniques

• CXDI - Coherent X-ray Diffraction Imaging
• XES - X-ray Emission Spectroscopy
• PDF - Pair Distribution Function
• XRPD - X-ray Powder Diffraction
• XRD - X-ray Diffraction

Sample environments

• Double sided laser heating diamond anvil cell (YAG and CO2; T up to 5000 K)
• Resistively heated diamond anvil cell (T up 1000 K)
• High pressure He flow cryostat (T down to 5 K)
• Paris-Edinburgh cell
• Nano-positioning stage

Detectors

• EIGER2 X CdTe 9M detector for XRD
• Vortex detector for XRF
• pco.dimax and pco.edge for XRI

Technical details

The upgraded ID27 beamline at the ESRF is a 120-meter-long instrument fully optimized for the Extremely Bright Source (EBS), offering excellent performance for high-pressure science. Its cryo-undulator (CPMU18) delivers high photon flux and tunability (15–55 keV), while double-multilayer (DMM) and double-crystal monochromators (DCM) ensure energy resolution and harmonic rejection. The Kirkpatrick-Baez (KB) focusing mirrors enable nano-focused beams (down to 500 nm) with high stability and flux, supporting XRD, XRF, and XRI experiments.

The modular end-station features three granite tables for KB mirrors, goniometers, and detectors, ensuring precision and reproducibility. Specialized goniometers (heavy-duty, laser-heating, and nano-positioning) accommodate diverse sample environments, including diamond anvil cells (DACs). Advanced detectors-such as the Eiger2 9M (CdTe) for XRD, Vortex SDD for XRF, and PCO Edge camera for XRI-provide high-resolution, high-sensitivity data collection. The Soller slits system reduces background noise, enhancing signal clarity for disordered materials. The beamline’s long working distance and thermo-stabilized hutch ensure mechanical stability for extreme-condition experiments.